Construction of a web-based geographical information system: The case of Ria de Aveiro region Helena Albuquerque Filomena Martins Rui Manuel de Assunção Raposo Luís Manuel Tomás Galiza Cardoso Pedro Miguel dos Santos Beça Pereira Paulo Dias Publication Year of Publication: 2016 Identifiers ISSN: 2156-6909 Other Numbers: http://hdl.handle.net/11328/1834 Alternative titles DOIGoogle ScholarBibTeXRIS Locators